Goodbye Lemur and other cruft, hello run-in-roblox-based testing

plugin/modules/lemur

@@ -1 +0,0 @@
-Subproject commit 96d4166a2d9e146e6955eeacccc0c79a86a177f5

plugin/place.project.json

@@ -20,6 +20,9 @@
         },
         "t": {
           "$path": "modules/t/lib"
+        },
+        "RbxDom": {
+          "$path": "modules/rbx-dom/rbx_dom_lua/src"
         }
       },
       "TestEZ": {

plugin/src/Assets.lua

@@ -1,11 +1,5 @@
 local Assets = {
-	Sprites = {
-		WhiteCross = {
-			asset = "rbxassetid://2738712459",
-			offset = Vector2.new(190, 318),
-			size = Vector2.new(18, 18),
-		},
-	},
+	Sprites = {},
 	Slices = {
 		RoundBox = {
 			asset = "rbxassetid://2773204550",